sampled grade

sampled grade

[′sam·pəld ′grād]
(mining engineering)
The amount of valuable metal in the ore in place as determined by underground, surface, or drill-hole sampling.
References in periodicals archive ?
The vastly experienced Natal, who also sampled Grade 1 action at Punchestown, and the fast-groundloving Jubilant Note, runner-up in a handicap chase here, are the dangers.